SQL 查询，无法识别 '('select

Question

select * 
from TABLE_A 
where ID = (select ID 
            from TABLE_B as b 
            inner join TABLE_C as c on b.id = c.id 
            where b.date = "2021-10-31");

无法识别 '(' 'select' 'ID' 附近的输入

Answer 1

您的查询中有更正。

由于内部选择查询将返回 Id 的集合，因此您需要使用 'in' 关键字而不是 '='。

修改后，您的查询应如下所示：

select * from TABLE_A where ID in (select ID from TABLE_B as b inner join TABLE_C as c on b.id = c.id where b.date = "2021-10-31");